| Titre : | Ardea 89(2) - 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. J. Negro, Auteur ;
J. L. Tella, Auteur ;
F. Hiraldo, Auteur ;
G. R. Bortolotti, Auteur ;
P. Prieto, Auteur
Dans
Ardea (89(2) 2001)
We studied seasonal variation in plasma carotenoid levels of captive Red-legged Partridges Alectoris rufa in relation to sex, age and condition. The legs, bill and eye lores in this species are bright red due to carotenoid pigments. Carotenoid l[...]
Article
J. O. Bustnes, Auteur ;
G. H. Systad, Auteur
Dans
Ardea (89(2) 2001)
Habitat use of Steller's Elders Polysticta stelleri was studied in Varangerfjord, northern Norway, during three winter periods (November, January and April) in 1996/97. We partitioned habitats based on water depth and benthic conditions, and com[...]
Article
H. Boyd, Auteur ;
T. Piersma, Auteur
Dans
Ardea (89(2) 2001)
The demography of Red Knots Calidris canutus islandica wintering in Britain from 1969 to 1995 was examined using published data on winter numbers, unpublished ringing data, and information on the percentages first year birds in late autumn and w[...]
Article
S. Nebel, Auteur ;
T. Piersma, Auteur ;
J. A. Van Gils, Auteur ;
A. Dekinga, Auteur ;
B. Spaans, Auteur
Dans
Ardea (89(2) 2001)
Article
J. A. Amat, Auteur ;
R. M. Fraga, Auteur ;
G. M. Arroyo, Auteur
Dans
Ardea (89(2) 2001)
Offspring size is a very important life-history trait that may be affected by maternal effects and environmental conditions. We studied variation in egg size and within-clutch symmetry variation in egg volume in Kentish Plovers Charadrius alexan[...]
Article
C. Doutrelant, Auteur ;
O. Lemaitre, Auteur ;
M. M. Lambrechts, Auteur
Dans
Ardea (89(2) 2001)
The aim of this study is to describe and investigate geographic variation of Blue Tit Parus caeruleus song. We recorded songs at seven sites situated in the French Mediterranean region, five on Corsica and two on the mainland of southern France.[...]
Article
H. P. van der Jeugd, Auteur ;
M. P. Olthoff, Auteur ;
J. Stahl, Auteur
Dans
Ardea (89(2) 2001)
Habitat use of two populations of Barnacle Goose Branta leucopsis, one arctic and one temperate breeding, was studied on Schiermonnikoog, an island in the Dutch Wadden Sea, during winter and spring 1988/89. Although both populations have overlap[...]
Article
J. L. Telleria, Auteur ;
J. Perez-Tris, Auteur ;
A. Ramírez, Auteur ;
E. Fernandez-Juricic, Auteur ;
R. Carbonell, Auteur
Dans
Ardea (89(2) 2001)
This paper studies how population density affects the dynamics of habitat occupation by Robins in a wintering area of southern Spain (Gibraltar area), and how the between-habitat distribution is influenced by the age and migratory behaviour of b[...]
Article
G. Pasinelli, Auteur
Dans
Ardea (89(2) 2001)
Reproductive success in birds is influenced by a variety of factors, many of which can be attributed to human activities such as land use or forest management.. Others like weather or age of the birds are not under human control but are influent[...]
Article
V. Penteriani, Auteur ;
M. Gallardo, Auteur ;
P. Roche, Auteur ;
H. Cazassus, Auteur
Dans
Ardea (89(2) 2001)
We analysed the breeding density of a Mediterranean Eagle Owl Bubo bubo population and the characteristics of the landscape surrounding the nest, in an attempt to identify the determinants of habitat preferences within a radius of 1000 m around [...]
Article
J. Kaspar V. Delhey, Auteur ;
Martina Carrete, Auteur ;
Mariano M. Martinez, Auteur
Dans
Ardea (89(2) 2001)
Many gulls are mainly generalist feeders, but the Olrog's Gull Larus atlanticus is one of few gull species to which relatively specialised (carcinophagous) feeding habits have been attributed. Endemic along the Atlantic coast of Argentina, Urugu[...]
Article
R. G. Calmaestra, Auteur ;
E. Moreno, Auteur
Dans
Ardea (89(2) 2001)
We have analysed the Likely existence of an ecomorphological pattern relating migratory behaviour and four morphometrical variables of the wing apparatus: wing span, wing length, aspect ratio, and wing loading. We selected 22 passerines belongin[...]
Article
N. Verboven, Auteur ;
J. M. Tinbergen, Auteur ;
S. Verhulst, Auteur
Dans
Ardea (89(2) 2001)
We studied the reproductive success of facultatively double brooded Great Tits Parus major in relation to (seasonal) variation in abundance of their main food supply: caterpillars in Oak Quercus robur. Data were collected in two mixed woods (Vli[...]
Article
M. Honza, Auteur ;
A. Moksnes, Auteur ;
E. Roskaft, Auteur ;
B. G. Stokke, Auteur
Dans
Ardea (89(2) 2001)
The aim of this study was to investigate the occurrence of Common Cuckoo Cuculus canorus egg morphs in relation to host species and nest sites. The study is based on analyses of museum egg collections and field observations of Common Cuckoo para[...]
Article
J. K. V. Delhey, Auteur ;
M. Carrete, Auteur ;
M. M. Martinez, Auteur
Dans
Ardea (89(2) 2001)
Many gulls are mainly generalist feeders, but the Olrog's Gull Larus atlanticus is one of few gull species to which relatively specialised (carcinophagous) feeding habits have been attributed. Endemic along the Atlantic coast of Argentina, Urugu[...]
Article
Article
L. Sasvari, Auteur ;
Z. Hegyi, Auteur
Dans
Ardea (89(2) 2001)
Relationships between the parental quality and reproductive performance have been studied in many birds, but not in Ciconiiformes soar We hypothesised that parental condition of White Storks Ciconia ciconia affects both parental care and breedin[...]
